15 000 ans ?
 
Tout le sensationnel de la vidéo semble reposer la-dessus mais :

Tiwanaku is a magnet for Atlantis hunters and a variety of new agers. The idea that Tiwanaku is 14,000 years old is based on a rather faulty study done in 1926. Since then, there has been a huge quantity of work both on the archaeology and geology of the area, and all data indicates that Tiwanaku existed from around A.D. 300-500 to 900-1000. [...]—Alexei Vranich
 
http://interactive.archaeology.org/tiwanaku/qanda.html